Forum:
I’m having a small issue with a segment of my network. Users are reporting intermittant connection issues on this segmant that seem to last almost exactly five minutes in duration. My network monitoring software doesn’t pick up these drops in connection because the monitoring agents are on the same segment and it appears layer 1, 2 and to some extent layer 3 connections are not dropping.
Because the network monitoring agents are on the same segment the pings don’t drop which means some layer 3 works. The odd thing is the effected clients are not able to ping any outside internet IPs or the Gateway router for the five minute duration. It seems they can ping everything else on the internel network.
My theory is that somehow the gateway router is losing the arp entries for this segment of the network. Although I’m not sure as to why this would be happening.
The network is simple in design (the ‘-’ denotes wireless and ‘=’ denotes ethernet):
GW_Router <===> Managed Switch1 <===> PTP Master <—> PTP Remote <===> Managed Switch2 <===> AP’s <—> SUBS
That is a somewhat simplified sketch of the network, there are multiple PTP and PTMP links going off both of the managed switches. The network is all Layer2 until it hits the GW_Router which is the only devices that makes routing descions.
This is the only segment that is experiencing this problem. I have mutliple PTP links going off the Managed Switch1 all configured in the same manor, however they do not experience this problem.
Any ideas?
-Bill